diff options
Diffstat (limited to 'tiff/contrib/pds')
| -rwxr-xr-x | tiff/contrib/pds/Makefile.am | 27 | ||||
| -rwxr-xr-x | tiff/contrib/pds/Makefile.in | 494 | ||||
| -rwxr-xr-x | tiff/contrib/pds/README | 90 | ||||
| -rwxr-xr-x | tiff/contrib/pds/tif_imageiter.c | 525 | ||||
| -rwxr-xr-x | tiff/contrib/pds/tif_imageiter.h | 64 | ||||
| -rwxr-xr-x | tiff/contrib/pds/tif_pdsdirread.c | 1131 | ||||
| -rwxr-xr-x | tiff/contrib/pds/tif_pdsdirwrite.c | 971 |
7 files changed, 3302 insertions, 0 deletions
diff --git a/tiff/contrib/pds/Makefile.am b/tiff/contrib/pds/Makefile.am new file mode 100755 index 0000000..b3c145d --- /dev/null +++ b/tiff/contrib/pds/Makefile.am @@ -0,0 +1,27 @@ +# Tag Image File Format (TIFF) Software +# +# Copyright (C) 2004, Andrey Kiselev <dron@ak4719.spb.edu> +# +# Permission to use, copy, modify, distribute, and sell this software and +# its documentation for any purpose is hereby granted without fee, provided +# that (i) the above copyright notices and this permission notice appear in +# all copies of the software and related documentation, and (ii) the names of +# Sam Leffler and Silicon Graphics may not be used in any advertising or +# publicity relating to the software without the specific, prior written +# permission of Sam Leffler and Silicon Graphics. +# +# THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, +# EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY +# WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. +# +# IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR +# ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, +# OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, +# WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF +# LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE +# OF THIS SOFTWARE. + +# Process this file with automake to produce Makefile.in. + +EXTRA_DIST = README tif_imageiter.c tif_imageiter.h tif_pdsdirread.c tif_pdsdirwrite.c + diff --git a/tiff/contrib/pds/Makefile.in b/tiff/contrib/pds/Makefile.in new file mode 100755 index 0000000..c124ad0 --- /dev/null +++ b/tiff/contrib/pds/Makefile.in @@ -0,0 +1,494 @@ +# Makefile.in generated by automake 1.15 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2014 Free Software Foundation, Inc. + +# This Makefile.in is free software; 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Poelman (WSAT)" <poelmanc@plk.af.mil> +Subject: Potential TIFF library additions + +Delivery-Date: Fri, 01 Aug 1997 19:21:06 -0700 + +Sam, + +You probably don't remember me, but I sent in a couple of bug fixes +regarding the TIFF library about a 16 months ago or so... + +I just wanted to send you two other additions that I have made to our +local version of the TIFF library in hopes that you will want to +incorporate them into your next major release of the TIFF library. +(These additions are based on TIFF version 3.4beta31, but they sit on +top of the library so they shouldn't be much trouble to incorporate them +into any more recent version.) They are internally documented to a +reasonable extent and we've been successfully using them in our code +here for over a year. If you think they would make good additions to the +TIFF library, I'd be happy to clean them up more, document them more, +and/or integrate them with the latest version of the TIFF library, but I +figured I'd see if you were interested in using them before I went to +all that trouble. + +TIFF Image Iterator +------------------- +Your ReadRGBA() routine works well for reading many different formats +(TILED, STIP, compressed or not, etc.) of the most basic types of data +(RGB, 8-bit greyscale, 8-bit colormapped) into an SGI-style data array, +and serves as a good template for users with other needs. I used it as +an exmaple of how to make an iterator which, rather than fill a data +array, calls an arbitrary user-supplied callback function for each +"chunk" of data - that "chunk" might be a strip or a tile, and might +have one sample-per-pixel or two, and might be 8-bit data or 16-bit or +24-bit. The callback function can do whatever it wants with the data - +store it in a big array, convert it to RGBA, or draw it directly to the +screen. I was able to use this iterator to read 16-bit greyscale and 32- +and 64-bit floating point data, which wasn't possible with ReadRGBA(). + +I have tested this routine with 8- and 16-bit greyscale data as well as +with 32- and 64-bit floating point data. I believe nearly all of our +data is organized in strips, so actually I'd appreciate it if you had +some tiled images that I could test it with. + +It should certainly be possible and would be cleanest to reimplement +ReadRGBA() in terms of the image iterator, but I haven't done that. + + +Private Sub-Directory Read/Write +-------------------------------- +TIFF-PL is a Phillips Laboratory extension to the TIFF tags that allows +us to store satellite imaging-specific information in a TIFF format, +such as the satellite's trajectory, the imaging time, etc. In order to +give us the flexibility to modify the tag definitions without getting +approval from the TIFF committee every time, we were given only three +TIFF tags - a PL signature, a PL version number, and PL directory +offset, which lists the position in the file at which to find a private +sub-directory of tags-value pairs. So I wrote two routines: +TIFFWritePrivateDataSubDirectory(), which takes a list of tags and a +"get" function and writes the tag values into the TIFF file, returning +the offset within the file at which it wrote the directory; and +TIFFReadPrivateDataSubDirectory(), which takes an offset, a list of +tags, and a "set" function and reads all the data from the private +directory. The functions themselves are pretty simple. (The files are +huge because I had to basically copy all of the tif_dirread.c and +tif_dirwrite.c files in order to access the various fetching routines +which were all declared static and therefore inaccessible in the TIFF +library.) + + +I'm including the four source files (tif_imgiter.h, tif_imgiter.c, +tif_pdsdirread.c, tif_pdsdirwrite.c) in case you want to take a look at +them. I can also send you some sample code that uses them if you like. +If you're interested in having them incorporated into the standard TIFF +library, I'd be happy to do that integration and clean up and document +the routines. (For example, I've already realized that instead of +limiting the SEP callback function to three bands (R,G,B) it should take +an array to enable the handling of n-banded multi-spectral data...) If +not, I'll just leave them as they are, since they work fine for us now. + +Holler if you have any questions. + +-- Conrad +__________________________________________________________________ + Capt Conrad J. Poelman PL/WSAT (Phillips Laboratory) + 505-846-4347 3550 Aberdeen Ave SE + (FAX) 505-846-4374 Kirtland AFB, NM 87117-5776 + diff --git a/tiff/contrib/pds/tif_imageiter.c b/tiff/contrib/pds/tif_imageiter.c new file mode 100755 index 0000000..e025dc5 --- /dev/null +++ b/tiff/contrib/pds/tif_imageiter.c @@ -0,0 +1,525 @@ +/* $Header: /cvs/maptools/cvsroot/libtiff/contrib/pds/tif_imageiter.c,v 1.4 2010-06-08 18:55:15 bfriesen Exp $ */ + +/* + * Copyright (c) 1991-1996 Sam Leffler + * Copyright (c) 1991-1996 Silicon Graphics, Inc. + * + * Permission to use, copy, modify, distribute, and sell this software and + * its documentation for any purpose is hereby granted without fee, provided + * that (i) the above copyright notices and this permission notice appear in + * all copies of the software and related documentation, and (ii) the names of + * Sam Leffler and Silicon Graphics may not be used in any advertising or + * publicity relating to the software without the specific, prior written + * permission of Sam Leffler and Silicon Graphics. + * + * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, + * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY + * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. + * + * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR + * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, + * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, + * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF + * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE + * OF THIS SOFTWARE. + */ + +/* + * TIFF Library + * + * Written by Conrad J. Poelman, PL/WSAT, Kirtland AFB, NM on 26 Mar 96. + * + * This file contains code to allow a calling program to "iterate" over each + * pixels in an image as it is read from the file. The iterator takes care of + * reading strips versus (possibly clipped) tiles, decoding the information + * according to the decoding method, and so on, so that calling program can + * ignore those details. The calling program does, however, need to be + * conscious of the type of the pixel data that it is receiving. + * + * For reasons of efficiency, the callback function actually gets called for + * "blocks" of pixels rather than for individual pixels. The format of the + * callback arguments is given below. + * + * This code was taken from TIFFReadRGBAImage() in tif_getimage.c of the original + * TIFF distribution, and simplified and generalized to provide this general + * iteration capability. Those routines could certainly be re-implemented in terms + * of a TIFFImageIter if desired. + * + */ +#include "tiffiop.h" +#include "tif_imageiter.h" +#include <assert.h> +#include <stdio.h> + +static int gtTileContig(TIFFImageIter*, void *udata, uint32, uint32); +static int gtTileSeparate(TIFFImageIter*, void *udata, uint32, uint32); +static int gtStripContig(TIFFImageIter*, void *udata, uint32, uint32); +static int gtStripSeparate(TIFFImageIter*, void *udata, uint32, uint32); + +static const char photoTag[] = "PhotometricInterpretation"; + +static int +isCCITTCompression(TIFF* tif) +{ + uint16 compress; + TIFFGetField(tif, TIFFTAG_COMPRESSION, &compress); + return (compress == COMPRESSION_CCITTFAX3 || + compress == COMPRESSION_CCITTFAX4 || + compress == COMPRESSION_CCITTRLE || + compress == COMPRESSION_CCITTRLEW); +} + +int +TIFFImageIterBegin(TIFFImageIter* img, TIFF* tif, int stop, char emsg[1024]) +{ + uint16* sampleinfo; + uint16 extrasamples; + uint16 planarconfig; + int colorchannels; + + img->tif = tif; + img->stoponerr = stop; + TIFFGetFieldDefaulted(tif, TIFFTAG_BITSPERSAMPLE, &img->bitspersample); + img->alpha = 0; + TIFFGetFieldDefaulted(tif, TIFFTAG_SAMPLESPERPIXEL, &img->samplesperpixel); + TIFFGetFieldDefaulted(tif, TIFFTAG_EXTRASAMPLES, + &extrasamples, &sampleinfo); + if (extrasamples == 1) + switch (sampleinfo[0]) { + case EXTRASAMPLE_ASSOCALPHA: /* data is pre-multiplied */ + case EXTRASAMPLE_UNASSALPHA: /* data is not pre-multiplied */ + img->alpha = sampleinfo[0]; + break; + } + colorchannels = img->samplesperpixel - extrasamples; + TIFFGetFieldDefaulted(tif, TIFFTAG_PLANARCONFIG, &planarconfig); + if (!TIFFGetField(tif, TIFFTAG_PHOTOMETRIC, &img->photometric)) { + switch (colorchannels) { + case 1: + if (isCCITTCompression(tif)) + img->photometric = PHOTOMETRIC_MINISWHITE; + else + img->photometric = PHOTOMETRIC_MINISBLACK; + break; + case 3: + img->photometric = PHOTOMETRIC_RGB; + break; + default: + sprintf(emsg, "Missing needed %s tag", photoTag); + return (0); + } + } + switch (img->photometric) { + case PHOTOMETRIC_PALETTE: + if (!TIFFGetField(tif, TIFFTAG_COLORMAP, + &img->redcmap, &img->greencmap, &img->bluecmap)) { + TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "Missing required \"Colormap\" tag"); + return (0); + } + /* fall thru... */ + case PHOTOMETRIC_MINISWHITE: + case PHOTOMETRIC_MINISBLACK: +/* This should work now so skip the check - BSR + if (planarconfig == PLANARCONFIG_CONTIG && img->samplesperpixel != 1) { + sprintf(emsg, + "Sorry, can not handle contiguous data with %s=%d, and %s=%d", + photoTag, img->photometric, + "Samples/pixel", img->samplesperpixel); + return (0); + } + */ + break; + case PHOTOMETRIC_YCBCR: + if (planarconfig != PLANARCONFIG_CONTIG) { + sprintf(emsg, "Sorry, can not handle YCbCr images with %s=%d", + "Planarconfiguration", planarconfig); + return (0); + } + /* It would probably be nice to have a reality check here. */ + { uint16 compress; + TIFFGetField(tif, TIFFTAG_COMPRESSION, &compress); + if (compress == COMPRESSION_JPEG && planarconfig == PLANARCONFIG_CONTIG) { + /* can rely on libjpeg to convert to RGB */ + /* XXX should restore current state on exit */ + TIFFSetField(tif, TIFFTAG_JPEGCOLORMODE, JPEGCOLORMODE_RGB); + img->photometric = PHOTOMETRIC_RGB; + } + } + break; + case PHOTOMETRIC_RGB: + if (colorchannels < 3) { + sprintf(emsg, "Sorry, can not handle RGB image with %s=%d", + "Color channels", colorchannels); + return (0); + } + break; + case PHOTOMETRIC_SEPARATED: { + uint16 inkset; + TIFFGetFieldDefaulted(tif, TIFFTAG_INKSET, &inkset); + if (inkset != INKSET_CMYK) { + sprintf(emsg, "Sorry, can not handle separated image with %s=%d", + "InkSet", inkset); + return (0); + } + if (img->samplesperpixel != 4) { + sprintf(emsg, "Sorry, can not handle separated image with %s=%d", + "Samples/pixel", img->samplesperpixel); + return (0); + } + break; + } + default: + sprintf(emsg, "Sorry, can not handle image with %s=%d", + photoTag, img->photometric); + return (0); + } + TIFFGetField(tif, TIFFTAG_IMAGEWIDTH, &img->width); + TIFFGetField(tif, TIFFTAG_IMAGELENGTH, &img->height); + + TIFFGetFieldDefaulted(tif, TIFFTAG_ORIENTATION, &img->orientation); + switch (img->orientation) { + case ORIENTATION_BOTRIGHT: + case ORIENTATION_RIGHTBOT: /* XXX */ + case ORIENTATION_LEFTBOT: /* XXX */ + TIFFWarning(TIFFFileName(tif), "using bottom-left orientation"); + img->orientation = ORIENTATION_BOTLEFT; + /* fall thru... */ + case ORIENTATION_BOTLEFT: + break; + case ORIENTATION_TOPRIGHT: + case ORIENTATION_RIGHTTOP: /* XXX */ + case ORIENTATION_LEFTTOP: /* XXX */ + default: + TIFFWarning(TIFFFileName(tif), "using top-left orientation"); + img->orientation = ORIENTATION_TOPLEFT; + /* fall thru... */ + case ORIENTATION_TOPLEFT: + break; + } + + img->isContig = + !(planarconfig == PLANARCONFIG_SEPARATE && colorchannels > 1); + if (img->isContig) { + img->get = TIFFIsTiled(tif) ? gtTileContig : gtStripContig; + } else { + img->get = TIFFIsTiled(tif) ? gtTileSeparate : gtStripSeparate; + } + return (1); +} + +int +TIFFImageIterGet(TIFFImageIter* img, void *udata, uint32 w, uint32 h) +{ + if (img->get == NULL) { + TIFFErrorExt(img->tif->tif_clientdata, TIFFFileName(img->tif), "No \"get\" routine setup"); + return (0); + } + if (img->callback.any == NULL) { + TIFFErrorExt(img->tif->tif_clientdata, TIFFFileName(img->tif), + "No \"put\" routine setupl; probably can not handle image format"); + return (0); + } + return (*img->get)(img, udata, w, h); +} + +TIFFImageIterEnd(TIFFImageIter* img) +{ + /* Nothing to free... ? */ +} + +/* + * Read the specified image into an ABGR-format raster. + */ +int +TIFFReadImageIter(TIFF* tif, + uint32 rwidth, uint32 rheight, uint8* raster, int stop) +{ + char emsg[1024]; + TIFFImageIter img; + int ok; + + if (TIFFImageIterBegin(&img, tif, stop, emsg)) { + /* XXX verify rwidth and rheight against width and height */ + ok = TIFFImageIterGet(&img, raster, rwidth, img.height); + TIFFImageIterEnd(&img); + } else { + TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), emsg); + ok = 0; + } + return (ok); +} + + +/* + * Get an tile-organized image that has + * PlanarConfiguration contiguous if SamplesPerPixel > 1 + * or + * SamplesPerPixel == 1 + */ +static int +gtTileContig(TIFFImageIter* img, void *udata, uint32 w, uint32 h) +{ + TIFF* tif = img->tif; + ImageIterTileContigRoutine callback = img->callback.contig; + uint16 orientation; + uint32 col, row; + uint32 tw, th; + u_char* buf; + int32 fromskew; + uint32 nrow; + + buf = (u_char*) _TIFFmalloc(TIFFTileSize(tif)); + if (buf == 0) { + TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "No space for tile buffer"); + return (0); + } + TIFFGetField(tif, TIFFTAG_TILEWIDTH, &tw); + TIFFGetField(tif, TIFFTAG_TILELENGTH, &th); + orientation = img->orientation; + for (row = 0; row < h; row += th) { + nrow = (row + th > h ? h - row : th); + for (col = 0; col < w; col += tw) { + if (TIFFReadTile(tif, buf, col, row, 0, 0) < 0 && img->stoponerr) + break; + if (col + tw > w) { + /* + * Tile is clipped horizontally. Calculate + * visible portion and skewing factors. + */ + uint32 npix = w - col; + fromskew = tw - npix; + (*callback)(img, udata, col, row, npix, nrow, fromskew, buf); + } else { + (*callback)(img, udata, col, row, tw, nrow, 0, buf); + } + } + } + _TIFFfree(buf); + return (1); +} + +/* + * Get an tile-organized image that has + * SamplesPerPixel > 1 + * PlanarConfiguration separated + * We assume that all such images are RGB. + */ +static int +gtTileSeparate(TIFFImageIter* img, void *udata, uint32 w, uint32 h) +{ + TIFF* tif = img->tif; + ImageIterTileSeparateRoutine callback = img->callback.separate; + uint16 orientation; + uint32 col, row; + uint32 tw, th; + u_char* buf; + u_char* r; + u_char* g; + u_char* b; + u_char* a; + tsize_t tilesize; + int32 fromskew; + int alpha = img->alpha; + uint32 nrow; + + tilesize = TIFFTileSize(tif); + buf = (u_char*) _TIFFmalloc(4*tilesize); + if (buf == 0) { + TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "No space for tile buffer"); + return (0); + } + r = buf; + g = r + tilesize; + b = g + tilesize; + a = b + tilesize; + if (!alpha) + memset(a, 0xff, tilesize); + TIFFGetField(tif, TIFFTAG_TILEWIDTH, &tw); + TIFFGetField(tif, TIFFTAG_TILELENGTH, &th); + orientation = img->orientation; + for (row = 0; row < h; row += th) { + nrow = (row + th > h ? h - row : th); + for (col = 0; col < w; col += tw) { + if (TIFFReadTile(tif, r, col, row,0,0) < 0 && img->stoponerr) + break; + if (TIFFReadTile(tif, g, col, row,0,1) < 0 && img->stoponerr) + break; + if (TIFFReadTile(tif, b, col, row,0,2) < 0 && img->stoponerr) + break; + if (alpha && TIFFReadTile(tif,a,col,row,0,3) < 0 && img->stoponerr) + break; + if (col + tw > w) { + /* + * Tile is clipped horizontally. Calculate + * visible portion and skewing factors. + */ + uint32 npix = w - col; + fromskew = tw - npix; + (*callback)(img, udata, col, row, npix, nrow, fromskew, r, g, b, a); + } else { + (*callback)(img, udata, col, row, tw, nrow, 0, r, g, b, a); + } + } + } + _TIFFfree(buf); + return (1); +} + +/* + * Get a strip-organized image that has + * PlanarConfiguration contiguous if SamplesPerPixel > 1 + * or + * SamplesPerPixel == 1 + */ +static int +gtStripContig(TIFFImageIter* img, void *udata, uint32 w, uint32 h) +{ + TIFF* tif = img->tif; + ImageIterTileContigRoutine callback = img->callback.contig; + uint16 orientation; + uint32 row, nrow; + u_char* buf; + uint32 rowsperstrip; + uint32 imagewidth = img->width; + tsize_t scanline; + int32 fromskew; + + buf = (u_char*) _TIFFmalloc(TIFFStripSize(tif)); + if (buf == 0) { + TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "No space for strip buffer"); + return (0); + } + orientation = img->orientation; + TIFFGetFieldDefaulted(tif, TIFFTAG_ROWSPERSTRIP, &rowsperstrip); + scanline = TIFFScanlineSize(tif); + fromskew = (w < imagewidth ? imagewidth - w : 0); + for (row = 0; row < h; row += rowsperstrip) { + nrow = (row + rowsperstrip > h ? h - row : rowsperstrip); + if (TIFFReadEncodedStrip(tif, TIFFComputeStrip(tif, row, 0), + buf, nrow*scanline) < 0 && img->stoponerr) + break; + (*callback)(img, udata, 0, row, w, nrow, fromskew, buf); + } + _TIFFfree(buf); + return (1); +} + +/* + * Get a strip-organized image with + * SamplesPerPixel > 1 + * PlanarConfiguration separated + * We assume that all such images are RGB. + */ +static int +gtStripSeparate(TIFFImageIter* img, void *udata, uint32 w, uint32 h) +{ + TIFF* tif = img->tif; + ImageIterTileSeparateRoutine callback = img->callback.separate; + uint16 orientation; + u_char *buf; + u_char *r, *g, *b, *a; + uint32 row, nrow; + tsize_t scanline; + uint32 rowsperstrip; + uint32 imagewidth = img->width; + tsize_t stripsize; + int32 fromskew; + int alpha = img->alpha; + + stripsize = TIFFStripSize(tif); + r = buf = (u_char *)_TIFFmalloc(4*stripsize); + if (buf == 0) { + TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "No space for tile buffer"); + return (0); + } + g = r + stripsize; + b = g + stripsize; + a = b + stripsize; + if (!alpha) + memset(a, 0xff, stripsize); + orientation = img->orientation; + TIFFGetFieldDefaulted(tif, TIFFTAG_ROWSPERSTRIP, &rowsperstrip); + scanline = TIFFScanlineSize(tif); + fromskew = (w < imagewidth ? imagewidth - w : 0); + for (row = 0; row < h; row += rowsperstrip) { + nrow = (row + rowsperstrip > h ? h - row : rowsperstrip); + if (TIFFReadEncodedStrip(tif, TIFFComputeStrip(tif, row, 0), + r, nrow*scanline) < 0 && img->stoponerr) + break; + if (TIFFReadEncodedStrip(tif, TIFFComputeStrip(tif, row, 1), + g, nrow*scanline) < 0 && img->stoponerr) + break; + if (TIFFReadEncodedStrip(tif, TIFFComputeStrip(tif, row, 2), + b, nrow*scanline) < 0 && img->stoponerr) + break; + if (alpha && + (TIFFReadEncodedStrip(tif, TIFFComputeStrip(tif, row, 3), + a, nrow*scanline) < 0 && img->stoponerr)) + break; + (*callback)(img, udata, 0, row, w, nrow, fromskew, r, g, b, a); + } + _TIFFfree(buf); + return (1); +} + +DECLAREContigCallbackFunc(TestContigCallback) +{ + printf("Contig Callback called with x = %d, y = %d, w = %d, h = %d, fromskew = %d\n", + x, y, w, h, fromskew); +} + + +DECLARESepCallbackFunc(TestSepCallback) +{ + printf("Sep Callback called with x = %d, y = %d, w = %d, h = %d, fromskew = %d\n", + x, y, w, h, fromskew); +} + + +#ifdef MAIN +main(int argc, char **argv) +{ + char emsg[1024]; + TIFFImageIter img; + int ok; + int stop = 1; + + TIFF *tif; + unsigned long nx, ny; + unsigned short BitsPerSample, SamplesPerPixel; + int isColorMapped, isPliFile; + unsigned char *ColorMap; + unsigned char *data; + + if (argc < 2) { + fprintf(stderr,"usage: %s tiff_file\n",argv[0]); + exit(1); + } + tif = (TIFF *)PLIGetImage(argv[1], (void *) &data, &ColorMap, + &nx, &ny, &BitsPerSample, &SamplesPerPixel, + &isColorMapped, &isPliFile); + if (tif != NULL) { + + if (TIFFImageIterBegin(&img, tif, stop, emsg)) { + /* Here need to set data and callback function! */ + if (img.isContig) { + img.callback = TestContigCallback; + } else { + img.callback = TestSepCallback; + } + ok = TIFFImageIterGet(&img, NULL, img.width, img.height); + TIFFImageIterEnd(&img); + } else { + TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), emsg); + } + } + +} +#endif +/* + * Local Variables: + * mode: c + * c-basic-offset: 8 + * fill-column: 78 + * End: + */ diff --git a/tiff/contrib/pds/tif_imageiter.h b/tiff/contrib/pds/tif_imageiter.h new file mode 100755 index 0000000..e7dbe46 --- /dev/null +++ b/tiff/contrib/pds/tif_imageiter.h @@ -0,0 +1,64 @@ +typedef struct _TIFFImageIter TIFFImageIter; + +/* The callback function is called for each "block" of image pixel data after + it has been read from the file and decoded. This image pixel data is in the + buffer pp, and this data represents the image pixels from (x,y) to + (x+w,y+h). It is stored in pixel format, so each pixel contains + img->samplesperpixel consecutive samples each containing img->bitspersample + bits of data. The array pp is ordered in h consecutive rows of w+fromskew + pixels each. */ +typedef void (*ImageIterTileContigRoutine) + (TIFFImageIter*, void *, uint32, uint32, uint32, uint32, int32, + unsigned char*); +#define DECLAREContigCallbackFunc(name) \ +static void name(\ + TIFFImageIter* img, \ + void* user_data, \ + uint32 x, uint32 y, \ + uint32 w, uint32 h, \ + int32 fromskew, \ + u_char* pp \ +) + +typedef void (*ImageIterTileSeparateRoutine) + (TIFFImageIter*, void *, uint32, uint32, uint32, uint32, int32, + unsigned char*, unsigned char*, unsigned char*, unsigned char*); +#define DECLARESepCallbackFunc(name) \ +static void name(\ + TIFFImageIter* img, \ + void* user_data, \ + uint32 x, uint32 y, \ + uint32 w, uint32 h,\ + int32 fromskew, \ + u_char* r, u_char* g, u_char* b, u_char* a\ +) + +struct _TIFFImageIter { + TIFF* tif; /* image handle */ + int stoponerr; /* stop on read error */ + int isContig; /* data is packed/separate */ + int alpha; /* type of alpha data present */ + uint32 width; /* image width */ + uint32 height; /* image height */ + uint16 bitspersample; /* image bits/sample */ + uint16 samplesperpixel; /* image samples/pixel */ + uint16 orientation; /* image orientation */ + uint16 photometric; /* image photometric interp */ + uint16* redcmap; /* colormap pallete */ + uint16* greencmap; + uint16* bluecmap; + /* get image data routine */ + int (*get)(TIFFImageIter*, void *udata, uint32, uint32); + union { + void (*any)(TIFFImageIter*); + ImageIterTileContigRoutine contig; + ImageIterTileSeparateRoutine separate; + } callback; /* fn to exec for each block */ +}; +/* + * Local Variables: + * mode: c + * c-basic-offset: 8 + * fill-column: 78 + * End: + */ diff --git a/tiff/contrib/pds/tif_pdsdirread.c b/tiff/contrib/pds/tif_pdsdirread.c new file mode 100755 index 0000000..37e513a --- /dev/null +++ b/tiff/contrib/pds/tif_pdsdirread.c @@ -0,0 +1,1131 @@ +/* $Header: /cvs/maptools/cvsroot/libtiff/contrib/pds/tif_pdsdirread.c,v 1.4 2010-06-08 18:55:15 bfriesen Exp $ */ + +/* + * Copyright (c) 1988-1996 Sam Leffler + * Copyright (c) 1991-1996 Silicon Graphics, Inc. + * Copyright (c( 1996 USAF Phillips Laboratory + * + * Permission to use, copy, modify, distribute, and sell this software and + * its documentation for any purpose is hereby granted without fee, provided + * that (i) the above copyright notices and this permission notice appear in + * all copies of the software and related documentation, and (ii) the names of + * Sam Leffler and Silicon Graphics may not be used in any advertising or + * publicity relating to the software without the specific, prior written + * permission of Sam Leffler and Silicon Graphics. + * + * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, + * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY + * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. + * + * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR + * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, + * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, + * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF + * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE + * OF THIS SOFTWARE. + */ + +/* + * TIFF Library. + * + * These routines written by Conrad J. Poelman on a single late-night of + * March 20-21, 1996. + * + * The entire purpose of this file is to provide a single external function, + * TIFFReadPrivateDataSubDirectory(). This function is intended for use in reading a + * private subdirectory from a TIFF file into a private structure. The + * actual writing of data into the structure is handled by the setFieldFn(), + * which is passed to TIFFReadPrivateDataSubDirectory() as a parameter. The idea is to + * enable any application wishing to store private subdirectories to do so + * easily using this function, without modifying the TIFF library. + * + * The astute observer will notice that only two functions are at all different + * from the original tif_dirread.c file: TIFFReadPrivateDataSubDirectory() and + * TIFFFetchNormalSubTag(). All the other stuff that makes this file so huge + * is only necessary because all of those functions are declared static in + * tif_dirread.c, so we have to totally duplicate them in order to use them. + * + * Oh, also note the bug fix in TIFFFetchFloat(). + * + */ + +#include "tiffiop.h" + +#define IGNORE 0 /* tag placeholder used below */ + +#if HAVE_IEEEFP +#define TIFFCvtIEEEFloatToNative(tif, n, fp) +#define TIFFCvtIEEEDoubleToNative(tif, n, dp) +#else +extern void TIFFCvtIEEEFloatToNative(TIFF*, uint32, float*); +extern void TIFFCvtIEEEDoubleToNative(TIFF*, uint32, double*); +#endif + +static void EstimateStripByteCounts(TIFF*, TIFFDirEntry*, uint16); +static void MissingRequired(TIFF*, const char*); +static int CheckDirCount(TIFF*, TIFFDirEntry*, uint32); +static tsize_t TIFFFetchData(TIFF*, TIFFDirEntry*, char*); +static tsize_t TIFFFetchString(TIFF*, TIFFDirEntry*, char*); +static float TIFFFetchRational(TIFF*, TIFFDirEntry*); +static int TIFFFetchNormalSubTag(TIFF*, TIFFDirEntry*, const TIFFFieldInfo*, + int (*getFieldFn)(TIFF *tif,ttag_t tag,...)); +static int TIFFFetchPerSampleShorts(TIFF*, TIFFDirEntry*, int*); +static int TIFFFetchPerSampleAnys(TIFF*, TIFFDirEntry*, double*); +static int TIFFFetchShortArray(TIFF*, TIFFDirEntry*, uint16*); +static int TIFFFetchStripThing(TIFF*, TIFFDirEntry*, long, uint32**); +static int TIFFFetchExtraSamples(TIFF*, TIFFDirEntry*); +static int TIFFFetchRefBlackWhite(TIFF*, TIFFDirEntry*); +static float TIFFFetchFloat(TIFF*, TIFFDirEntry*); +static int TIFFFetchFloatArray(TIFF*, TIFFDirEntry*, float*); +static int TIFFFetchDoubleArray(TIFF*, TIFFDirEntry*, double*); +static int TIFFFetchAnyArray(TIFF*, TIFFDirEntry*, double*); +static int TIFFFetchShortPair(TIFF*, TIFFDirEntry*); +#if STRIPCHOP_SUPPORT +static void ChopUpSingleUncompressedStrip(TIFF*); +#endif + +static char * +CheckMalloc(TIFF* tif, tsize_t n, const char* what) +{ + char *cp = (char*)_TIFFmalloc(n); + if (cp == NULL) + TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "No space %s", what); + return (cp); +} + +/* Just as was done with TIFFWritePrivateDataSubDirectory(), here we implement + TIFFReadPrivateDataSubDirectory() which takes an offset into the TIFF file, + a TIFFFieldInfo structure specifying the types of the various tags, + and a function to use to set individual tags when they are encountered. + The data is read from the file, translated using the TIFF library's + built-in machine-independent conversion functions, and filled into + private subdirectory structure. + + This code was written by copying the original TIFFReadDirectory() function + from tif_dirread.c and paring it down to what is needed for this. + + It is the caller's responsibility to allocate and initialize the internal + structure that setFieldFn() will be writing into. If this function is being + called more than once before closing the file, the caller also must be + careful to free data in the structure before re-initializing. + + It is also the caller's responsibility to verify the presence of + any required fields after reading the directory in. +*/ + + +int +TIFFReadPrivateDataSubDirectory(TIFF* tif, toff_t pdir_offset, + TIFFFieldInfo *field_info, + int (*setFieldFn)(TIFF *tif, ttag_t tag, ...)) +{ + register TIFFDirEntry* dp; + register int n; + register TIFFDirectory* td; + TIFFDirEntry* dir; + int iv; + long v; + double dv; + const TIFFFieldInfo* fip; + int fix; + uint16 dircount; + uint32 nextdiroff; + char* cp; + int diroutoforderwarning = 0; + + /* Skipped part about checking for directories or compression data. */ + + if (!isMapped(tif)) { + if (!SeekOK(tif, pdir_offset)) { + TIFFErrorExt(tif->tif_clientdata, tif->tif_name, + "Seek error accessing TIFF private subdirectory"); + return (0); + } + if (!ReadOK(tif, &dircount, sizeof (uint16))) { + TIFFErrorExt(tif->tif_clientdata, tif->tif_name, + "Can not read TIFF private subdirectory count"); + return (0); + } + if (tif->tif_flags & TIFF_SWAB) + TIFFSwabShort(&dircount); + dir = (TIFFDirEntry *)CheckMalloc(tif, + dircount * sizeof (TIFFDirEntry), "to read TIFF private subdirectory"); + if (dir == NULL) + return (0); + if (!ReadOK(tif, dir, dircount*sizeof (TIFFDirEntry))) { + TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "Can not read TIFF private subdirectory"); + goto bad; + } + /* + * Read offset to next directory for sequential scans. + */ + (void) ReadOK(tif, &nextdiroff, sizeof (uint32)); + } else { + toff_t off = pdir_offset; + + if (off + sizeof (short) > tif->tif_size) { + TIFFErrorExt(tif->tif_clientdata, tif->tif_name, + "Can not read TIFF private subdirectory count"); + return (0); + } else + _TIFFmemcpy(&dircount, tif->tif_base + off, sizeof (uint16)); + off += sizeof (uint16); + if (tif->tif_flags & TIFF_SWAB) + TIFFSwabShort(&dircount); + dir = (TIFFDirEntry *)CheckMalloc(tif, + dircount * sizeof (TIFFDirEntry), "to read TIFF private subdirectory"); + if (dir == NULL) + return (0); + if (off + dircount*sizeof (TIFFDirEntry) > tif->tif_size) { + TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "Can not read TIFF private subdirectory"); + goto bad; + } else + _TIFFmemcpy(dir, tif->tif_base + off, + dircount*sizeof (TIFFDirEntry)); + off += dircount* sizeof (TIFFDirEntry); + if (off + sizeof (uint32) < tif->tif_size) + _TIFFmemcpy(&nextdiroff, tif->tif_base+off, sizeof (uint32)); + } + if (tif->tif_flags & TIFF_SWAB) + TIFFSwabLong(&nextdiroff); + + /* + * Setup default value and then make a pass over + * the fields to check type and tag information, + * and to extract info required to size data + * structures. A second pass is made afterwards + * to read in everthing not taken in the first pass. + */ + td = &tif->tif_dir; + + for (fip = field_info, dp = dir, n = dircount; + n > 0; n--, dp++) { + if (tif->tif_flags & TIFF_SWAB) { + TIFFSwabArrayOfShort(&dp->tdir_tag, 2); + TIFFSwabArrayOfLong(&dp->tdir_count, 2); + } + /* + * Find the field information entry for this tag. + */ + /* + * Silicon Beach (at least) writes unordered + * directory tags (violating the spec). Handle + * it here, but be obnoxious (maybe they'll fix it?). + */ + if (dp->tdir_tag < fip->field_tag) { + if (!diroutoforderwarning) { + TIFFWarning(tif->tif_name, + "invalid TIFF private subdirectory; tags are not sorted in ascending order"); + diroutoforderwarning = 1; + } + fip = field_info; /* O(n^2) */ + } + + while (fip->field_tag && fip->field_tag < dp->tdir_tag) + fip++; + if (!fip->field_tag || fip->field_tag != dp->tdir_tag) { + TIFFWarning(tif->tif_name, + "unknown field with tag %d (0x%x) in private subdirectory ignored", + dp->tdir_tag, dp->tdir_tag); + dp->tdir_tag = IGNORE; + fip = field_info;/* restart search */ + continue; + } + /* + * Null out old tags that we ignore. + */ + + /* Not implemented yet, since FIELD_IGNORE is specific to + the main directories. Could pass this in too... */ + if (0 /* && fip->field_bit == FIELD_IGNORE */) { + ignore: + dp->tdir_tag = IGNORE; + continue; + } + + /* + * Check data type. + */ + + while (dp->tdir_type != (u_short)fip->field_type) { + if (fip->field_type == TIFF_ANY) /* wildcard */ + break; + fip++; + if (!fip->field_tag || fip->field_tag != dp->tdir_tag) { + TIFFWarning(tif->tif_name, + "wrong data type %d for \"%s\"; tag ignored", + dp->tdir_type, fip[-1].field_name); + goto ignore; + } + } + /* + * Check count if known in advance. + */ + if (fip->field_readcount != TIFF_VARIABLE) { + uint32 expected = (fip->field_readcount == TIFF_SPP) ? + (uint32) td->td_samplesperpixel : + (uint32) fip->field_readcount; + if (!CheckDirCount(tif, dp, expected)) + goto ignore; + } + + /* Now read in and process data from field. */ + if (!TIFFFetchNormalSubTag(tif, dp, fip, setFieldFn)) + goto bad; + + } + + if (dir) + _TIFFfree(dir); + return (1); +bad: + if (dir) + _TIFFfree(dir); + return (0); +} + +static void +EstimateStripByteCounts(TIFF* tif, TIFFDirEntry* dir, uint16 dircount) +{ + register TIFFDirEntry *dp; + register TIFFDirectory *td = &tif->tif_dir; + uint16 i; + + if (td->td_stripbytecount) + _TIFFfree(td->td_stripbytecount); + td->td_stripbytecount = (uint32*) + CheckMalloc(tif, td->td_nstrips * sizeof (uint32), + "for \"StripByteCounts\" array"); + if (td->td_compression != COMPRESSION_NONE) { + uint32 space = (uint32)(sizeof (TIFFHeader) + + sizeof (uint16) + + (dircount * sizeof (TIFFDirEntry)) + + sizeof (uint32)); + toff_t filesize = TIFFGetFileSize(tif); + uint16 n; + + /* calculate amount of space used by indirect values */ + for (dp = dir, n = dircount; n > 0; n--, dp++) { + uint32 cc = dp->tdir_count*TIFFDataWidth(dp->tdir_type); + if (cc > sizeof (uint32)) + space += cc; + } + space = (filesize - space) / td->td_samplesperpixel; + for (i = 0; i < td->td_nstrips; i++) + td->td_stripbytecount[i] = space; + /* + * This gross hack handles the case were the offset to + * the last strip is past the place where we think the strip + * should begin. Since a strip of data must be contiguous, + * it's safe to assume that we've overestimated the amount + * of data in the strip and trim this number back accordingly. + */ + i--; + if (td->td_stripoffset[i] + td->td_stripbytecount[i] > filesize) + td->td_stripbytecount[i] = + filesize - td->td_stripoffset[i]; + } else { + uint32 rowbytes = TIFFScanlineSize(tif); + uint32 rowsperstrip = td->td_imagelength / td->td_nstrips; + for (i = 0; i < td->td_nstrips; i++) + td->td_stripbytecount[i] = rowbytes*rowsperstrip; + } + TIFFSetFieldBit(tif, FIELD_STRIPBYTECOUNTS); + if (!TIFFFieldSet(tif, FIELD_ROWSPERSTRIP)) + td->td_rowsperstrip = td->td_imagelength; +} + +static void +MissingRequired(TIFF* tif, const char* tagname) +{ + TIFFErrorExt(tif->tif_clientdata, tif->tif_name, + "TIFF directory is missing required \"%s\" field", tagname); +} + +/* + * Check the count field of a directory + * entry against a known value. The caller + * is expected to skip/ignore the tag if + * there is a mismatch. + */ +static int +CheckDirCount(TIFF* tif, TIFFDirEntry* dir, uint32 count) +{ + if (count != dir->tdir_count) { + TIFFWarning(tif->tif_name, + "incorrect count for field \"%s\" (%lu, expecting %lu); tag ignored", + _TIFFFieldWithTag(tif, dir->tdir_tag)->field_name, + dir->tdir_count, count); + return (0); + } + return (1); +} + +/* + * Fetch a contiguous directory item. + */ +static tsize_t +TIFFFetchData(TIFF* tif, TIFFDirEntry* dir, char* cp) +{ + int w = TIFFDataWidth(dir->tdir_type); + tsize_t cc = dir->tdir_count * w; + + if (!isMapped(tif)) { + if (!SeekOK(tif, dir->tdir_offset)) + goto bad; + if (!ReadOK(tif, cp, cc)) + goto bad; + } else { + if (dir->tdir_offset + cc > tif->tif_size) + goto bad; + _TIFFmemcpy(cp, tif->tif_base + dir->tdir_offset, cc); + } + if (tif->tif_flags & TIFF_SWAB) { + switch (dir->tdir_type) { + case TIFF_SHORT: + case TIFF_SSHORT: + TIFFSwabArrayOfShort((uint16*) cp, dir->tdir_count); + break; + case TIFF_LONG: + case TIFF_SLONG: + case TIFF_FLOAT: + TIFFSwabArrayOfLong((uint32*) cp, dir->tdir_count); + break; + case TIFF_RATIONAL: + case TIFF_SRATIONAL: + TIFFSwabArrayOfLong((uint32*) cp, 2*dir->tdir_count); + break; + case TIFF_DOUBLE: + TIFFSwabArrayOfDouble((double*) cp, dir->tdir_count); + break; + } + } + return (cc); +bad: + TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "Error fetching data for field \"%s\"", + _TIFFFieldWithTag(tif, dir->tdir_tag)->field_name); + return ((tsize_t) 0); +} + +/* + * Fetch an ASCII item from the file. + */ +static tsize_t +TIFFFetchString(TIFF* tif, TIFFDirEntry* dir, char* cp) +{ + if (dir->tdir_count <= 4) { + uint32 l = dir->tdir_offset; + if (tif->tif_flags & TIFF_SWAB) + TIFFSwabLong(&l); + _TIFFmemcpy(cp, &l, dir->tdir_count); + return (1); + } + return (TIFFFetchData(tif, dir, cp)); +} + +/* + * Convert numerator+denominator to float. + */ +static int +cvtRational(TIFF* tif, TIFFDirEntry* dir, uint32 num, uint32 denom, float* rv) +{ + if (denom == 0) { + TIFFErrorExt(tif->tif_clientdata, tif->tif_name, + "%s: Rational with zero denominator (num = %lu)", + _TIFFFieldWithTag(tif, dir->tdir_tag)->field_name, num); + return (0); + } else { + if (dir->tdir_type == TIFF_RATIONAL) + *rv = ((float)num / (float)denom); + else + *rv = ((float)(int32)num / (float)(int32)denom); + return (1); + } +} + +/* + * Fetch a rational item from the file + * at offset off and return the value + * as a floating point number. + */ +static float +TIFFFetchRational(TIFF* tif, TIFFDirEntry* dir) +{ + uint32 l[2]; + float v; + + return (!TIFFFetchData(tif, dir, (char *)l) || + !cvtRational(tif, dir, l[0], l[1], &v) ? 1.0f : v); +} + +/* + * Fetch a single floating point value + * from the offset field and return it + * as a native float. + */ +static float +TIFFFetchFloat(TIFF* tif, TIFFDirEntry* dir) +{ + /* This appears to be a flagrant bug in the TIFF library, yet I + actually don't understand how it could have ever worked the old + way. Look at the comments in my new code and you'll understand. */ +#if (0) + float v = (float) + TIFFExtractData(tif, dir->tdir_type, dir->tdir_offset); + TIFFCvtIEEEFloatToNative(tif, 1, &v); +#else + float v; + /* This is a little bit tricky - if we just cast the uint32 to a float, + C will perform a numerical conversion, which is not what we want. + We want to take the actual bit pattern in the uint32 and interpret + it as a float. Thus we cast a uint32 * into a float * and then + dereference to get v. */ + uint32 l = (uint32) + TIFFExtractData(tif, dir->tdir_type, dir->tdir_offset); + v = * (float *) &l; + TIFFCvtIEEEFloatToNative(tif, 1, &v); +#endif + return (v); + +} + +/* + * Fetch an array of BYTE or SBYTE values. + */ +static int +TIFFFetchByteArray(TIFF* tif, TIFFDirEntry* dir, uint16* v) +{ + if (dir->tdir_count <= 4) { + /* + * Extract data from offset field. + */ + if (tif->tif_header.tiff_magic == TIFF_BIGENDIAN) { + switch (dir->tdir_count) { + case 4: v[3] = dir->tdir_offset & 0xff; + case 3: v[2] = (dir->tdir_offset >> 8) & 0xff; + case 2: v[1] = (dir->tdir_offset >> 16) & 0xff; + case 1: v[0] = dir->tdir_offset >> 24; + } + } else { + switch (dir->tdir_count) { + case 4: v[3] = dir->tdir_offset >> 24; + case 3: v[2] = (dir->tdir_offset >> 16) & 0xff; + case 2: v[1] = (dir->tdir_offset >> 8) & 0xff; + case 1: v[0] = dir->tdir_offset & 0xff; + } + } + return (1); + } else + return (TIFFFetchData(tif, dir, (char*) v) != 0); /* XXX */ +} + +/* + * Fetch an array of SHORT or SSHORT values. + */ +static int +TIFFFetchShortArray(TIFF* tif, TIFFDirEntry* dir, uint16* v) +{ + if (dir->tdir_count <= 2) { + if (tif->tif_header.tiff_magic == TIFF_BIGENDIAN) { + switch (dir->tdir_count) { + case 2: v[1] = dir->tdir_offset & 0xffff; + case 1: v[0] = dir->tdir_offset >> 16; + } + } else { + switch (dir->tdir_count) { + case 2: v[1] = dir->tdir_offset >> 16; + case 1: v[0] = dir->tdir_offset & 0xffff; + } + } + return (1); + } else + return (TIFFFetchData(tif, dir, (char *)v) != 0); +} + +/* + * Fetch a pair of SHORT or BYTE values. + */ +static int +TIFFFetchShortPair(TIFF* tif, TIFFDirEntry* dir) +{ + uint16 v[2]; + int ok = 0; + + switch (dir->tdir_type) { + case TIFF_SHORT: + case TIFF_SSHORT: + ok = TIFFFetchShortArray(tif, dir, v); + break; + case TIFF_BYTE: + case TIFF_SBYTE: + ok = TIFFFetchByteArray(tif, dir, v); + break; + } + if (ok) + TIFFSetField(tif, dir->tdir_tag, v[0], v[1]); + return (ok); +} + +/* + * Fetch an array of LONG or SLONG values. + */ +static int +TIFFFetchLongArray(TIFF* tif, TIFFDirEntry* dir, uint32* v) +{ + if (dir->tdir_count == 1) { + v[0] = dir->tdir_offset; + return (1); + } else + return (TIFFFetchData(tif, dir, (char*) v) != 0); +} + +/* + * Fetch an array of RATIONAL or SRATIONAL values. + */ +static int +TIFFFetchRationalArray(TIFF* tif, TIFFDirEntry* dir, float* v) +{ + int ok = 0; + uint32* l; + + l = (uint32*)CheckMalloc(tif, + dir->tdir_count*TIFFDataWidth(dir->tdir_type), + "to fetch array of rationals"); + if (l) { + if (TIFFFetchData(tif, dir, (char *)l)) { + uint32 i; + for (i = 0; i < dir->tdir_count; i++) { + ok = cvtRational(tif, dir, + l[2*i+0], l[2*i+1], &v[i]); + if (!ok) + break; + } + } + _TIFFfree((char *)l); + } + return (ok); +} + +/* + * Fetch an array of FLOAT values. + */ +static int +TIFFFetchFloatArray(TIFF* tif, TIFFDirEntry* dir, float* v) +{ + + if (dir->tdir_count == 1) { + v[0] = *(float*) &dir->tdir_offset; + TIFFCvtIEEEFloatToNative(tif, dir->tdir_count, v); + return (1); + } else if (TIFFFetchData(tif, dir, (char*) v)) { + TIFFCvtIEEEFloatToNative(tif, dir->tdir_count, v); + return (1); + } else + return (0); +} + +/* + * Fetch an array of DOUBLE values. + */ +static int +TIFFFetchDoubleArray(TIFF* tif, TIFFDirEntry* dir, double* v) +{ + if (TIFFFetchData(tif, dir, (char*) v)) { + TIFFCvtIEEEDoubleToNative(tif, dir->tdir_count, v); + return (1); + } else + return (0); +} + +/* + * Fetch an array of ANY values. The actual values are + * returned as doubles which should be able hold all the + * types. Yes, there really should be an tany_t to avoid + * this potential non-portability ... Note in particular + * that we assume that the double return value vector is + * large enough to read in any fundamental type. We use + * that vector as a buffer to read in the base type vector + * and then convert it in place to double (from end + * to front of course). + */ +static int +TIFFFetchAnyArray(TIFF* tif, TIFFDirEntry* dir, double* v) +{ + int i; + + switch (dir->tdir_type) { + case TIFF_BYTE: + case TIFF_SBYTE: + if (!TIFFFetchByteArray(tif, dir, (uint16*) v)) + return (0); + if (dir->tdir_type == TIFF_BYTE) { + uint16* vp = (uint16*) v; + for (i = dir->tdir_count-1; i >= 0; i--) + v[i] = vp[i]; + } else { + int16* vp = (int16*) v; + for (i = dir->tdir_count-1; i >= 0; i--) + v[i] = vp[i]; + } + break; + case TIFF_SHORT: + case TIFF_SSHORT: + if (!TIFFFetchShortArray(tif, dir, (uint16*) v)) + return (0); + if (dir->tdir_type == TIFF_SHORT) { + uint16* vp = (uint16*) v; + for (i = dir->tdir_count-1; i >= 0; i--) + v[i] = vp[i]; + } else { + int16* vp = (int16*) v; + for (i = dir->tdir_count-1; i >= 0; i--) + v[i] = vp[i]; + } + break; + case TIFF_LONG: + case TIFF_SLONG: + if (!TIFFFetchLongArray(tif, dir, (uint32*) v)) + return (0); + if (dir->tdir_type == TIFF_LONG) { + uint32* vp = (uint32*) v; + for (i = dir->tdir_count-1; i >= 0; i--) + v[i] = vp[i]; + } else { + int32* vp = (int32*) v; + for (i = dir->tdir_count-1; i >= 0; i--) + v[i] = vp[i]; + } + break; + case TIFF_RATIONAL: + case TIFF_SRATIONAL: + if (!TIFFFetchRationalArray(tif, dir, (float*) v)) + return (0); + { float* vp = (float*) v; + for (i = dir->tdir_count-1; i >= 0; i--) + v[i] = vp[i]; + } + break; + case TIFF_FLOAT: + if (!TIFFFetchFloatArray(tif, dir, (float*) v)) + return (0); + { float* vp = (float*) v; + for (i = dir->tdir_count-1; i >= 0; i--) + v[i] = vp[i]; + } + break; + case TIFF_DOUBLE: + return (TIFFFetchDoubleArray(tif, dir, (double*) v)); + default: + /* TIFF_NOTYPE */ + /* TIFF_ASCII */ + /* TIFF_UNDEFINED */ + TIFFErrorExt(tif->tif_clientdata, tif->tif_name, + "Cannot read TIFF_ANY type %d for field \"%s\"", + _TIFFFieldWithTag(tif, dir->tdir_tag)->field_name); + return (0); + } + return (1); +} + + +/* + * Fetch a tag that is not handled by special case code. + */ +/* The standard function TIFFFetchNormalTag() could definitely be replaced + with a simple call to this function, just adding TIFFSetField() as the + last argument. */ +static int +TIFFFetchNormalSubTag(TIFF* tif, TIFFDirEntry* dp, const TIFFFieldInfo* fip, + int (*setFieldFn)(TIFF *tif, ttag_t tag, ...)) +{ + static char mesg[] = "to fetch tag value"; + int ok = 0; + + if (dp->tdir_count > 1) { /* array of values */ + char* cp = NULL; + + switch (dp->tdir_type) { + case TIFF_BYTE: + case TIFF_SBYTE: + /* NB: always expand BYTE values to shorts */ + cp = CheckMalloc(tif, + dp->tdir_count * sizeof (uint16), mesg); + ok = cp && TIFFFetchByteArray(tif, dp, (uint16*) cp); + break; + case TIFF_SHORT: + case TIFF_SSHORT: + cp = CheckMalloc(tif, + dp->tdir_count * sizeof (uint16), mesg); + ok = cp && TIFFFetchShortArray(tif, dp, (uint16*) cp); + break; + case TIFF_LONG: + case TIFF_SLONG: + cp = CheckMalloc(tif, + dp->tdir_count * sizeof (uint32), mesg); + ok = cp && TIFFFetchLongArray(tif, dp, (uint32*) cp); + break; + case TIFF_RATIONAL: + case TIFF_SRATIONAL: + cp = CheckMalloc(tif, + dp->tdir_count * sizeof (float), mesg); + ok = cp && TIFFFetchRationalArray(tif, dp, (float*) cp); + break; + case TIFF_FLOAT: + cp = CheckMalloc(tif, + dp->tdir_count * sizeof (float), mesg); + ok = cp && TIFFFetchFloatArray(tif, dp, (float*) cp); + break; + case TIFF_DOUBLE: + cp = CheckMalloc(tif, + dp->tdir_count * sizeof (double), mesg); + ok = cp && TIFFFetchDoubleArray(tif, dp, (double*) cp); + break; + case TIFF_ASCII: + case TIFF_UNDEFINED: /* bit of a cheat... */ + /* + * Some vendors write strings w/o the trailing + * NULL byte, so always append one just in case. + */ + cp = CheckMalloc(tif, dp->tdir_count+1, mesg); + if (ok = (cp && TIFFFetchString(tif, dp, cp))) + cp[dp->tdir_count] = '\0'; /* XXX */ + break; + } + if (ok) { + ok = (fip->field_passcount ? + (*setFieldFn)(tif, dp->tdir_tag, dp->tdir_count, cp) + : (*setFieldFn)(tif, dp->tdir_tag, cp)); + } + if (cp != NULL) + _TIFFfree(cp); + } else if (CheckDirCount(tif, dp, 1)) { /* singleton value */ + switch (dp->tdir_type) { + case TIFF_BYTE: + case TIFF_SBYTE: + case TIFF_SHORT: + case TIFF_SSHORT: + /* + * If the tag is also acceptable as a LONG or SLONG + * then (*setFieldFn) will expect an uint32 parameter + * passed to it (through varargs). Thus, for machines + * where sizeof (int) != sizeof (uint32) we must do + * a careful check here. It's hard to say if this + * is worth optimizing. + * + * NB: We use TIFFFieldWithTag here knowing that + * it returns us the first entry in the table + * for the tag and that that entry is for the + * widest potential data type the tag may have. + */ + { TIFFDataType type = fip->field_type; + if (type != TIFF_LONG && type != TIFF_SLONG) { + uint16 v = (uint16) + TIFFExtractData(tif, dp->tdir_type, dp->tdir_offset); + ok = (fip->field_passcount ? + (*setFieldFn)(tif, dp->tdir_tag, 1, &v) + : (*setFieldFn)(tif, dp->tdir_tag, v)); + break; + } + } + /* fall thru... */ + case TIFF_LONG: + case TIFF_SLONG: + { uint32 v32 = + TIFFExtractData(tif, dp->tdir_type, dp->tdir_offset); + ok = (fip->field_passcount ? + (*setFieldFn)(tif, dp->tdir_tag, 1, &v32) + : (*setFieldFn)(tif, dp->tdir_tag, v32)); + } + break; + case TIFF_RATIONAL: + case TIFF_SRATIONAL: + case TIFF_FLOAT: + { float v = (dp->tdir_type == TIFF_FLOAT ? + TIFFFetchFloat(tif, dp) + : TIFFFetchRational(tif, dp)); + ok = (fip->field_passcount ? + (*setFieldFn)(tif, dp->tdir_tag, 1, &v) + : (*setFieldFn)(tif, dp->tdir_tag, v)); + } + break; + case TIFF_DOUBLE: + { double v; + ok = (TIFFFetchDoubleArray(tif, dp, &v) && + (fip->field_passcount ? + (*setFieldFn)(tif, dp->tdir_tag, 1, &v) + : (*setFieldFn)(tif, dp->tdir_tag, v)) + ); + } + break; + case TIFF_ASCII: + case TIFF_UNDEFINED: /* bit of a cheat... */ + { char c[2]; + if (ok = (TIFFFetchString(tif, dp, c) != 0)) { + c[1] = '\0'; /* XXX paranoid */ + ok = (*setFieldFn)(tif, dp->tdir_tag, c); + } + } + break; + } + } + return (ok); +} + +/* Everything after this is exactly duplicated from the standard tif_dirread.c + file, necessitated by the fact that they are declared static there so + we can't call them! +*/ +#define NITEMS(x) (sizeof (x) / sizeof (x[0])) +/* + * Fetch samples/pixel short values for + * the specified tag and verify that + * all values are the same. + */ +static int +TIFFFetchPerSampleShorts(TIFF* tif, TIFFDirEntry* dir, int* pl) +{ + int samples = tif->tif_dir.td_samplesperpixel; + int status = 0; + + if (CheckDirCount(tif, dir, (uint32) samples)) { + uint16 buf[10]; + uint16* v = buf; + + if (samples > NITEMS(buf)) + v = (uint16*) _TIFFmalloc(samples * sizeof (uint16)); + if (TIFFFetchShortArray(tif, dir, v)) { + int i; + for (i = 1; i < samples; i++) + if (v[i] != v[0]) { + TIFFErrorExt(tif->tif_clientdata, tif->tif_name, + "Cannot handle different per-sample values for field \"%s\"", + _TIFFFieldWithTag(tif, dir->tdir_tag)->field_name); + goto bad; + } + *pl = v[0]; + status = 1; + } + bad: + if (v != buf) + _TIFFfree((char*) v); + } + return (status); +} + +/* + * Fetch samples/pixel ANY values for + * the specified tag and verify that + * all values are the same. + */ +static int +TIFFFetchPerSampleAnys(TIFF* tif, TIFFDirEntry* dir, double* pl) +{ + int samples = (int) tif->tif_dir.td_samplesperpixel; + int status = 0; + + if (CheckDirCount(tif, dir, (uint32) samples)) { + double buf[10]; + double* v = buf; + + if (samples > NITEMS(buf)) + v = (double*) _TIFFmalloc(samples * sizeof (double)); + if (TIFFFetchAnyArray(tif, dir, v)) { + int i; + for (i = 1; i < samples; i++) + if (v[i] != v[0]) { + TIFFErrorExt(tif->tif_clientdata, tif->tif_name, + "Cannot handle different per-sample values for field \"%s\"", + _TIFFFieldWithTag(tif, dir->tdir_tag)->field_name); + goto bad; + } + *pl = v[0]; + status = 1; + } + bad: + if (v != buf) + _TIFFfree(v); + } + return (status); +} +#undef NITEMS + +/* + * Fetch a set of offsets or lengths. + * While this routine says "strips", + * in fact it's also used for tiles. + */ +static int +TIFFFetchStripThing(TIFF* tif, TIFFDirEntry* dir, long nstrips, uint32** lpp) +{ + register uint32* lp; + int status; + + if (!CheckDirCount(tif, dir, (uint32) nstrips)) + return (0); + /* + * Allocate space for strip information. + */ + if (*lpp == NULL && + (*lpp = (uint32 *)CheckMalloc(tif, + nstrips * sizeof (uint32), "for strip array")) == NULL) + return (0); + lp = *lpp; + if (dir->tdir_type == (int)TIFF_SHORT) { + /* + * Handle uint16->uint32 expansion. + */ + uint16* dp = (uint16*) CheckMalloc(tif, + dir->tdir_count* sizeof (uint16), "to fetch strip tag"); + if (dp == NULL) + return (0); + if (status = TIFFFetchShortArray(tif, dir, dp)) { + register uint16* wp = dp; + while (nstrips-- > 0) + *lp++ = *wp++; + } + _TIFFfree((char*) dp); + } else + status = TIFFFetchLongArray(tif, dir, lp); + return (status); +} + +#define NITEMS(x) (sizeof (x) / sizeof (x[0])) +/* + * Fetch and set the ExtraSamples tag. + */ +static int +TIFFFetchExtraSamples(TIFF* tif, TIFFDirEntry* dir) +{ + uint16 buf[10]; + uint16* v = buf; + int status; + + if (dir->tdir_count > NITEMS(buf)) + v = (uint16*) _TIFFmalloc(dir->tdir_count * sizeof (uint16)); + if (dir->tdir_type == TIFF_BYTE) + status = TIFFFetchByteArray(tif, dir, v); + else + status = TIFFFetchShortArray(tif, dir, v); + if (status) + status = TIFFSetField(tif, dir->tdir_tag, dir->tdir_count, v); + if (v != buf) + _TIFFfree((char*) v); + return (status); +} +#undef NITEMS + +#ifdef COLORIMETRY_SUPPORT +/* + * Fetch and set the RefBlackWhite tag. + */ +static int +TIFFFetchRefBlackWhite(TIFF* tif, TIFFDirEntry* dir) +{ + static char mesg[] = "for \"ReferenceBlackWhite\" array"; + char* cp; + int ok; + + if (dir->tdir_type == TIFF_RATIONAL) + return (1/*TIFFFetchNormalTag(tif, dir) just so linker won't complain - this part of the code is never used anyway */); + /* + * Handle LONG's for backward compatibility. + */ + cp = CheckMalloc(tif, dir->tdir_count * sizeof (uint32), mesg); + if (ok = (cp && TIFFFetchLongArray(tif, dir, (uint32*) cp))) { + float* fp = (float*) + CheckMalloc(tif, dir->tdir_count * sizeof (float), mesg); + if (ok = (fp != NULL)) { + uint32 i; + for (i = 0; i < dir->tdir_count; i++) + fp[i] = (float)((uint32*) cp)[i]; + ok = TIFFSetField(tif, dir->tdir_tag, fp); + _TIFFfree((char*) fp); + } + } + if (cp) + _TIFFfree(cp); + return (ok); +} +#endif + +#if STRIPCHOP_SUPPORT +/* + * Replace a single strip (tile) of uncompressed data by + * multiple strips (tiles), each approximately 8Kbytes. + * This is useful for dealing with large images or + * for dealing with machines with a limited amount + * memory. + */ +static void +ChopUpSingleUncompressedStrip(TIFF* tif) +{ + register TIFFDirectory *td = &tif->tif_dir; + uint32 bytecount = td->td_stripbytecount[0]; + uint32 offset = td->td_stripoffset[0]; + tsize_t rowbytes = TIFFVTileSize(tif, 1), stripbytes; + tstrip_t strip, nstrips, rowsperstrip; + uint32* newcounts; + uint32* newoffsets; + + /* + * Make the rows hold at least one + * scanline, but fill 8k if possible. + */ + if (rowbytes > 8192) { + stripbytes = rowbytes; + rowsperstrip = 1; + } else { + rowsperstrip = 8192 / rowbytes; + stripbytes = rowbytes * rowsperstrip; + } + /* never increase the number of strips in an image */ + if (rowsperstrip >= td->td_rowsperstrip) + return; + nstrips = (tstrip_t) TIFFhowmany(bytecount, stripbytes); + newcounts = (uint32*) CheckMalloc(tif, nstrips * sizeof (uint32), + "for chopped \"StripByteCounts\" array"); + newoffsets = (uint32*) CheckMalloc(tif, nstrips * sizeof (uint32), + "for chopped \"StripOffsets\" array"); + if (newcounts == NULL || newoffsets == NULL) { + /* + * Unable to allocate new strip information, give + * up and use the original one strip information. + */ + if (newcounts != NULL) + _TIFFfree(newcounts); + if (newoffsets != NULL) + _TIFFfree(newoffsets); + return; + } + /* + * Fill the strip information arrays with + * new bytecounts and offsets that reflect + * the broken-up format. + */ + for (strip = 0; strip < nstrips; strip++) { + if (stripbytes > bytecount) + stripbytes = bytecount; + newcounts[strip] = stripbytes; + newoffsets[strip] = offset; + offset += stripbytes; + bytecount -= stripbytes; + } + /* + * Replace old single strip info with multi-strip info. + */ + td->td_stripsperimage = td->td_nstrips = nstrips; + TIFFSetField(tif, TIFFTAG_ROWSPERSTRIP, rowsperstrip); + + _TIFFfree(td->td_stripbytecount); + _TIFFfree(td->td_stripoffset); + td->td_stripbytecount = newcounts; + td->td_stripoffset = newoffsets; +} +#endif /* STRIPCHOP_SUPPORT */ +/* + * Local Variables: + * mode: c + * c-basic-offset: 8 + * fill-column: 78 + * End: + */ diff --git a/tiff/contrib/pds/tif_pdsdirwrite.c b/tiff/contrib/pds/tif_pdsdirwrite.c new file mode 100755 index 0000000..3c632da --- /dev/null +++ b/tiff/contrib/pds/tif_pdsdirwrite.c @@ -0,0 +1,971 @@ +/* $Header: /cvs/maptools/cvsroot/libtiff/contrib/pds/tif_pdsdirwrite.c,v 1.4 2010-06-08 18:55:15 bfriesen Exp $ */ + +/* When writing data to TIFF files, it is often useful to store application- + specific data in a private TIFF directory so that the tags don't need to + be registered and won't conflict with other people's user-defined tags. + One needs to have a registered public tag which contains some amount of + raw data. That raw data, however, is interpreted at an independent, + separate, private tiff directory. This file provides some routines which + will be useful for converting that data from its raw binary form into + the proper form for your application. +*/ + +/* + * Copyright (c) 1988-1996 Sam Leffler + * Copyright (c) 1991-1996 Silicon Graphics, Inc. + * Copyright (c( 1996 USAF Phillips Laboratory + * + * Permission to use, copy, modify, distribute, and sell this software and + * its documentation for any purpose is hereby granted without fee, provided + * that (i) the above copyright notices and this permission notice appear in + * all copies of the software and related documentation, and (ii) the names of + * Sam Leffler and Silicon Graphics may not be used in any advertising or + * publicity relating to the software without the specific, prior written + * permission of Sam Leffler and Silicon Graphics. + * + * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, + * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY + * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. + * + * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR + * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, + * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, + * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF + * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE + * OF THIS SOFTWARE. + */ + +/* + * TIFF Library. + * + * These routines written by Conrad J. Poelman on a single late-night of + * March 20-21, 1996. + * + * The entire purpose of this file is to provide a single external function, + * TIFFWritePrivateDataSubDirectory(). This function is intended for use + * in writing a private subdirectory structure into a TIFF file. The + * actual reading of data from the structure is handled by the getFieldFn(), + * which is passed to TIFFWritePrivateDataSubDirectory() as a parameter. The + * idea is to enable any application wishing to read private subdirectories to + * do so easily using this function, without modifying the TIFF library. + * + * The astute observer will notice that only two functions are at all different + * from the original tif_dirwrite.c file: TIFFWritePrivateDataSubDirectory()and + * TIFFWriteNormalSubTag(). All the other stuff that makes this file so huge + * is only necessary because all of those functions are declared static in + * tif_dirwrite.c, so we have to totally duplicate them in order to use them. + * + * Oh, also please note the bug-fix in the routine TIFFWriteNormalSubTag(), + * which equally should be applied to TIFFWriteNormalTag(). + * + */ +#include "tiffiop.h" + +#if HAVE_IEEEFP +#define TIFFCvtNativeToIEEEFloat(tif, n, fp) +#define TIFFCvtNativeToIEEEDouble(tif, n, dp) +#else +extern void TIFFCvtNativeToIEEEFloat(TIFF*, uint32, float*); +extern void TIFFCvtNativeToIEEEDouble(TIFF*, uint32, double*); +#endif + +static int TIFFWriteNormalTag(TIFF*, TIFFDirEntry*, const TIFFFieldInfo*); +static int TIFFWriteNormalSubTag(TIFF*, TIFFDirEntry*, const TIFFFieldInfo*, + int (*getFieldFn)(TIFF *tif,ttag_t tag,...)); +static void TIFFSetupShortLong(TIFF*, ttag_t, TIFFDirEntry*, uint32); +static int TIFFSetupShortPair(TIFF*, ttag_t, TIFFDirEntry*); +static int TIFFWritePerSampleShorts(TIFF*, ttag_t, TIFFDirEntry*); +static int TIFFWritePerSampleAnys(TIFF*, TIFFDataType, ttag_t, TIFFDirEntry*); +static int TIFFWriteShortTable(TIFF*, ttag_t, TIFFDirEntry*, uint32, uint16**); +static int TIFFWriteShortArray(TIFF*, + TIFFDataType, ttag_t, TIFFDirEntry*, uint32, uint16*); +static int TIFFWriteLongArray(TIFF *, + TIFFDataType, ttag_t, TIFFDirEntry*, uint32, uint32*); +static int TIFFWriteRationalArray(TIFF *, + TIFFDataType, ttag_t, TIFFDirEntry*, uint32, float*); +static int TIFFWriteFloatArray(TIFF *, + TIFFDataType, ttag_t, TIFFDirEntry*, uint32, float*); +static int TIFFWriteDoubleArray(TIFF *, + TIFFDataType, ttag_t, TIFFDirEntry*, uint32, double*); +static int TIFFWriteByteArray(TIFF*, TIFFDirEntry*, char*); +static int TIFFWriteAnyArray(TIFF*, + TIFFDataType, ttag_t, TIFFDirEntry*, uint32, double*); +#ifdef COLORIMETRY_SUPPORT +static int TIFFWriteTransferFunction(TIFF*, TIFFDirEntry*); +#endif +static int TIFFWriteData(TIFF*, TIFFDirEntry*, char*); +static int TIFFLinkDirectory(TIFF*); + +#define WriteRationalPair(type, tag1, v1, tag2, v2) { \ + if (!TIFFWriteRational(tif, type, tag1, dir, v1)) \ + goto bad; \ + if (!TIFFWriteRational(tif, type, tag2, dir+1, v2)) \ + goto bad; \ + dir++; \ +} +#define TIFFWriteRational(tif, type, tag, dir, v) \ + TIFFWriteRationalArray((tif), (type), (tag), (dir), 1, &(v)) +#ifndef TIFFWriteRational +static int TIFFWriteRational(TIFF*, + TIFFDataType, ttag_t, TIFFDirEntry*, float); +#endif + +/* This function will write an entire directory to the disk, and return the + offset value indicating where in the file it wrote the beginning of the + directory structure. This is NOT the same as the offset value before + calling this function, because some of the fields may have caused various + data items to be written out BEFORE writing the directory structure. + + This code was basically written by ripping of the TIFFWriteDirectory() + code and generalizing it, using RPS's TIFFWritePliIfd() code for + inspiration. My original goal was to make this code general enough that + the original TIFFWriteDirectory() could be rewritten to just call this + function with the appropriate field and field-accessing arguments. + + However, now I realize that there's a lot of code that gets executed for + the main, standard TIFF directories that does not apply to special + private subdirectories, so such a reimplementation for the sake of + eliminating redundant or duplicate code is probably not possible, + unless we also pass in a Main flag to indiciate which type of handling + to do, which would be kind of a hack. I've marked those places where I + changed or ripped out code which would have to be re-inserted to + generalize this function. If it can be done in a clean and graceful way, + it would be a great way to generalize the TIFF library. Otherwise, I'll + just leave this code here where it duplicates but remains on top of and + hopefully mostly independent of the main TIFF library. + + The caller will probably want to free the sub directory structure after + returning from this call, since otherwise once written out, the user + is likely to forget about it and leave data lying around. +*/ +toff_t +TIFFWritePrivateDataSubDirectory(TIFF* tif, + uint32 pdir_fieldsset[], int pdir_fields_last, + TIFFFieldInfo *field_info, + int (*getFieldFn)(TIFF *tif, ttag_t tag, ...)) +{ + uint16 dircount; + uint32 diroff, nextdiroff; + ttag_t tag; + uint32 nfields; + tsize_t dirsize; + char* data; + TIFFDirEntry* dir; + u_long b, *fields, fields_size; + toff_t directory_offset; + TIFFFieldInfo* fip; + + /* + * Deleted out all of the encoder flushing and such code from here - + * not necessary for subdirectories. + */ + + /* Finish writing out any image data. */ + TIFFFlushData(tif); + + /* + * Size the directory so that we can calculate + * offsets for the data items that aren't kept + * in-place in each field. + */ + nfields = 0; + for (b = 0; b <= pdir_fields_last; b++) + if (FieldSet(pdir_fieldsset, b)) + /* Deleted code to make size of first 4 tags 2 + instead of 1. */ + nfields += 1; + dirsize = nfields * sizeof (TIFFDirEntry); + data = (char*) _TIFFmalloc(dirsize); + if (data == NULL) { + TIFFErrorExt(tif->tif_clientdata, tif->tif_name, + "Cannot write private subdirectory, out of space"); + return (0); + } + /* + * Place directory in data section of the file. If there isn't one + * yet, place it at the end of the file. The directory is treated as + * data, so we don't link it into the directory structure at all. + */ + if (tif->tif_dataoff == 0) + tif->tif_dataoff =(TIFFSeekFile(tif, (toff_t) 0, SEEK_END)+1) &~ 1; + diroff = tif->tif_dataoff; + tif->tif_dataoff = (toff_t)( + diroff + sizeof (uint16) + dirsize + sizeof (toff_t)); + if (tif->tif_dataoff & 1) + tif->tif_dataoff++; + (void) TIFFSeekFile(tif, tif->tif_dataoff, SEEK_SET); + /*tif->tif_curdir++;*/ + dir = (TIFFDirEntry*) data; + /* + * Setup external form of directory + * entries and write data items. + */ + /* + * We make a local copy of the fieldsset here so that we don't mess + * up the original one when we call ResetFieldBit(). But I'm not sure + * why the original code calls ResetFieldBit(), since we're already + * going through the fields in order... + * + * fields_size is the number of uint32's we will need to hold the + * bit-mask for all of the fields. If our highest field number is + * 100, then we'll need 100 / (8*4)+1 == 4 uint32's to hold the + * fieldset. + * + * Unlike the original code, we allocate fields dynamically based + * on the requested pdir_fields_last value, allowing private + * data subdirectories to contain more than the built-in code's limit + * of 95 tags in a directory. + */ + fields_size = pdir_fields_last / (8*sizeof(uint32)) + 1; + fields = _TIFFmalloc(fields_size*sizeof(uint32)); + _TIFFmemcpy(fields, pdir_fieldsset, fields_size * sizeof(uint32)); + + /* Deleted "write out extra samples tag" code here. */ + + /* Deleted code for checking a billion little special cases for the + * standard TIFF tags. Should add a general mechanism for overloading + * write function for each field, just like Brian kept telling me!!! + */ + for (fip = field_info; fip->field_tag; fip++) { + /* Deleted code to check for FIELD_IGNORE!! */ + if (/* fip->field_bit == FIELD_IGNORE || */ + !FieldSet(fields, fip->field_bit)) + continue; + if (!TIFFWriteNormalSubTag(tif, dir, fip, getFieldFn)) + goto bad; + dir++; + ResetFieldBit(fields, fip->field_bit); + } + + /* Now we've written all of the referenced data, and are about to + write the main directory structure, so grab the tif_dataoff value + now so we can remember where we wrote the directory. */ + directory_offset = tif->tif_dataoff; + + /* + * Write directory. + */ + dircount = (uint16) nfields; + /* Deleted code to link to the next directory - we set it to zero! */ + nextdiroff = 0; + if (tif->tif_flags & TIFF_SWAB) { + /* + * The file's byte order is opposite to the + * native machine architecture. We overwrite + * the directory information with impunity + * because it'll be released below after we + * write it to the file. Note that all the + * other tag construction routines assume that + * we do this byte-swapping; i.e. they only + * byte-swap indirect data. + */ + for (dir = (TIFFDirEntry*) data; dircount; dir++, dircount--) { + TIFFSwabArrayOfShort(&dir->tdir_tag, 2); + TIFFSwabArrayOfLong(&dir->tdir_count, 2); + } + dircount = (uint16) nfields; + TIFFSwabShort(&dircount); + TIFFSwabLong(&nextdiroff); + } + + (void) TIFFSeekFile(tif, tif->tif_dataoff, SEEK_SET); + if (!WriteOK(tif, &dircount, sizeof (dircount))) { + TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "Error writing private subdirectory count"); + goto bad; + } + if (!WriteOK(tif, data, dirsize)) { + TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "Error writing private subdirectory contents"); + goto bad; + } + if (!WriteOK(tif, &nextdiroff, sizeof (nextdiroff))) { + TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "Error writing private subdirectory link"); + goto bad; + } + tif->tif_dataoff += sizeof(dircount) + dirsize + sizeof(nextdiroff); + + _TIFFfree(data); + _TIFFfree(fields); + tif->tif_flags &= ~TIFF_DIRTYDIRECT; + +#if (0) + /* This stuff commented out because I don't think we want it for + subdirectories, but I could be wrong. */ + (*tif->tif_cleanup)(tif); + + /* + * Reset directory-related state for subsequent + * directories. + */ + TIFFDefaultDirectory(tif); + tif->tif_curoff = 0; + tif->tif_row = (uint32) -1; + tif->tif_curstrip = (tstrip_t) -1; +#endif + + return (directory_offset); +bad: + _TIFFfree(data); + _TIFFfree(fields); + return (0); +} +#undef WriteRationalPair + +/* + * Process tags that are not special cased. + */ +/* The standard function TIFFWriteNormalTag() could definitely be replaced + with a simple call to this function, just adding TIFFGetField() as the + last argument. */ +static int +TIFFWriteNormalSubTag(TIFF* tif, TIFFDirEntry* dir, const TIFFFieldInfo* fip, + int (*getFieldFn)(TIFF *tif, ttag_t tag, ...)) +{ + u_short wc = (u_short) fip->field_writecount; + + dir->tdir_tag = fip->field_tag; + dir->tdir_type = (u_short) fip->field_type; + dir->tdir_count = wc; +#define WRITEF(x,y) x(tif, fip->field_type, fip->field_tag, dir, wc, y) + switch (fip->field_type) { + case TIFF_SHORT: + case TIFF_SSHORT: + if (wc > 1) { + uint16* wp; + if (wc == (u_short) TIFF_VARIABLE) { + (*getFieldFn)(tif, fip->field_tag, &wc, &wp); + dir->tdir_count = wc; + } else + (*getFieldFn)(tif, fip->field_tag, &wp); + if (!WRITEF(TIFFWriteShortArray, wp)) + return (0); + } else { + uint16 sv; + (*getFieldFn)(tif, fip->field_tag, &sv); + dir->tdir_offset = + TIFFInsertData(tif, dir->tdir_type, sv); + } + break; + case TIFF_LONG: + case TIFF_SLONG: + if (wc > 1) { + uint32* lp; + if (wc == (u_short) TIFF_VARIABLE) { + (*getFieldFn)(tif, fip->field_tag, &wc, &lp); + dir->tdir_count = wc; + } else + (*getFieldFn)(tif, fip->field_tag, &lp); + if (!WRITEF(TIFFWriteLongArray, lp)) + return (0); + } else { + /* XXX handle LONG->SHORT conversion */ + (*getFieldFn)(tif, fip->field_tag, &dir->tdir_offset); + } + break; + case TIFF_RATIONAL: + case TIFF_SRATIONAL: + if (wc > 1) { + float* fp; + if (wc == (u_short) TIFF_VARIABLE) { + (*getFieldFn)(tif, fip->field_tag, &wc, &fp); + dir->tdir_count = wc; + } else + (*getFieldFn)(tif, fip->field_tag, &fp); + if (!WRITEF(TIFFWriteRationalArray, fp)) + return (0); + } else { + float fv; + (*getFieldFn)(tif, fip->field_tag, &fv); + if (!WRITEF(TIFFWriteRationalArray, &fv)) + return (0); + } + break; + case TIFF_FLOAT: + if (wc > 1) { + float* fp; + if (wc == (u_short) TIFF_VARIABLE) { + (*getFieldFn)(tif, fip->field_tag, &wc, &fp); + dir->tdir_count = wc; + } else + (*getFieldFn)(tif, fip->field_tag, &fp); + if (!WRITEF(TIFFWriteFloatArray, fp)) + return (0); + } else { + float fv; + (*getFieldFn)(tif, fip->field_tag, &fv); + if (!WRITEF(TIFFWriteFloatArray, &fv)) + return (0); + } + break; + case TIFF_DOUBLE: + /* Hey - I think this is a bug, or at least a "gross + inconsistency", in the TIFF library. Look at the original + TIFF library code below within the "#if (0) ... #else". + Just from the type of *dp, you can see that this code + expects TIFFGetField() to be handed a double ** for + any TIFF_DOUBLE tag, even for the constant wc==1 case. + This is totally inconsistent with other fields (like + TIFF_FLOAT, above) and is also inconsistent with the + TIFFSetField() function for TIFF_DOUBLEs, which expects + to be passed a single double by value for the wc==1 case. + (See the handling of TIFFFetchNormalTag() in tif_dirread.c + for an example.) Maybe this function was written before + TIFFWriteDoubleArray() was written, not that that's an + excuse. Anyway, the new code below is a trivial modification + of the TIFF_FLOAT code above. The fact that even single + doubles get written out in the data segment and get an + offset value stored is irrelevant here - that is all + handled by TIFFWriteDoubleArray(). */ +#if (0) + { double* dp; + if (wc == (u_short) TIFF_VARIABLE) { + (*getFieldFn)(tif, fip->field_tag, &wc, &dp); + dir->tdir_count = wc; + } else + (*getFieldFn)(tif, fip->field_tag, &dp); + TIFFCvtNativeToIEEEDouble(tif, wc, dp); + if (!TIFFWriteData(tif, dir, (char*) dp)) + return (0); + } +#else + if (wc > 1) { + double* dp; + if (wc == (u_short) TIFF_VARIABLE) { + (*getFieldFn)(tif, fip->field_tag, &wc, &dp); + dir->tdir_count = wc; + } else + (*getFieldFn)(tif, fip->field_tag, &dp); + if (!WRITEF(TIFFWriteDoubleArray, dp)) + return (0); + } else { + double dv; + (*getFieldFn)(tif, fip->field_tag, &dv); + if (!WRITEF(TIFFWriteDoubleArray, &dv)) + return (0); + } +#endif + break; + case TIFF_ASCII: + { char* cp; + (*getFieldFn)(tif, fip->field_tag, &cp); + dir->tdir_count = (uint32) (strlen(cp) + 1); + if (!TIFFWriteByteArray(tif, dir, cp)) + return (0); + } + break; + case TIFF_UNDEFINED: + { char* cp; + if (wc == (u_short) TIFF_VARIABLE) { + (*getFieldFn)(tif, fip->field_tag, &wc, &cp); + dir->tdir_count = wc; + } else + (*getFieldFn)(tif, fip->field_tag, &cp); + if (!TIFFWriteByteArray(tif, dir, cp)) + return (0); + } + break; + } + return (1); +} +#undef WRITEF + +/* Everything after this is exactly duplicated from the standard tif_dirwrite.c + file, necessitated by the fact that they are declared static there so + we can't call them! +*/ +/* + * Setup a directory entry with either a SHORT + * or LONG type according to the value. + */ +static void +TIFFSetupShortLong(TIFF* tif, ttag_t tag, TIFFDirEntry* dir, uint32 v) +{ + dir->tdir_tag = tag; + dir->tdir_count = 1; + if (v > 0xffffL) { + dir->tdir_type = (short) TIFF_LONG; + dir->tdir_offset = v; + } else { + dir->tdir_type = (short) TIFF_SHORT; + dir->tdir_offset = TIFFInsertData(tif, (int) TIFF_SHORT, v); + } +} +#undef MakeShortDirent + +#ifndef TIFFWriteRational +/* + * Setup a RATIONAL directory entry and + * write the associated indirect value. + */ +static int +TIFFWriteRational(TIFF* tif, + TIFFDataType type, ttag_t tag, TIFFDirEntry* dir, float v) +{ + return (TIFFWriteRationalArray(tif, type, tag, dir, 1, &v)); +} +#endif + +#define NITEMS(x) (sizeof (x) / sizeof (x[0])) +/* + * Setup a directory entry that references a + * samples/pixel array of SHORT values and + * (potentially) write the associated indirect + * values. + */ +static int +TIFFWritePerSampleShorts(TIFF* tif, ttag_t tag, TIFFDirEntry* dir) +{ + uint16 buf[10], v; + uint16* w = buf; + int i, status, samples = tif->tif_dir.td_samplesperpixel; + + if (samples > NITEMS(buf)) + w = (uint16*) _TIFFmalloc(samples * sizeof (uint16)); + TIFFGetField(tif, tag, &v); + for (i = 0; i < samples; i++) + w[i] = v; + status = TIFFWriteShortArray(tif, TIFF_SHORT, tag, dir, samples, w); + if (w != buf) + _TIFFfree((char*) w); + return (status); +} + +/* + * Setup a directory entry that references a samples/pixel array of ``type'' + * values and (potentially) write the associated indirect values. The source + * data from TIFFGetField() for the specified tag must be returned as double. + */ +static int +TIFFWritePerSampleAnys(TIFF* tif, + TIFFDataType type, ttag_t tag, TIFFDirEntry* dir) +{ + double buf[10], v; + double* w = buf; + int i, status; + int samples = (int) tif->tif_dir.td_samplesperpixel; + + if (samples > NITEMS(buf)) + w = (double*) _TIFFmalloc(samples * sizeof (double)); + TIFFGetField(tif, tag, &v); + for (i = 0; i < samples; i++) + w[i] = v; + status = TIFFWriteAnyArray(tif, type, tag, dir, samples, w); + if (w != buf) + _TIFFfree(w); + return (status); +} +#undef NITEMS + +/* + * Setup a pair of shorts that are returned by + * value, rather than as a reference to an array. + */ +static int +TIFFSetupShortPair(TIFF* tif, ttag_t tag, TIFFDirEntry* dir) +{ + uint16 v[2]; + + TIFFGetField(tif, tag, &v[0], &v[1]); + return (TIFFWriteShortArray(tif, TIFF_SHORT, tag, dir, 2, v)); +} + +/* + * Setup a directory entry for an NxM table of shorts, + * where M is known to be 2**bitspersample, and write + * the associated indirect data. + */ +static int +TIFFWriteShortTable(TIFF* tif, + ttag_t tag, TIFFDirEntry* dir, uint32 n, uint16** table) +{ + uint32 i, off; + + dir->tdir_tag = tag; + dir->tdir_type = (short) TIFF_SHORT; + /* XXX -- yech, fool TIFFWriteData */ + dir->tdir_count = (uint32) (1L<<tif->tif_dir.td_bitspersample); + off = tif->tif_dataoff; + for (i = 0; i < n; i++) + if (!TIFFWriteData(tif, dir, (char *)table[i])) + return (0); + dir->tdir_count *= n; + dir->tdir_offset = off; + return (1); +} + +/* + * Write/copy data associated with an ASCII or opaque tag value. + */ +static int +TIFFWriteByteArray(TIFF* tif, TIFFDirEntry* dir, char* cp) +{ + if (dir->tdir_count > 4) { + if (!TIFFWriteData(tif, dir, cp)) + return (0); + } else + _TIFFmemcpy(&dir->tdir_offset, cp, dir->tdir_count); + return (1); +} + +/* + * Setup a directory entry of an array of SHORT + * or SSHORT and write the associated indirect values. + */ +static int +TIFFWriteShortArray(TIFF* tif, + TIFFDataType type, ttag_t tag, TIFFDirEntry* dir, uint32 n, uint16* v) +{ + dir->tdir_tag = tag; + dir->tdir_type = (short) type; + dir->tdir_count = n; + if (n <= 2) { + if (tif->tif_header.tiff_magic == TIFF_BIGENDIAN) { + dir->tdir_offset = (uint32) ((long) v[0] << 16); + if (n == 2) + dir->tdir_offset |= v[1] & 0xffff; + } else { + dir->tdir_offset = v[0] & 0xffff; + if (n == 2) + dir->tdir_offset |= (long) v[1] << 16; + } + return (1); + } else + return (TIFFWriteData(tif, dir, (char*) v)); +} + +/* + * Setup a directory entry of an array of LONG + * or SLONG and write the associated indirect values. + */ +static int +TIFFWriteLongArray(TIFF* tif, + TIFFDataType type, ttag_t tag, TIFFDirEntry* dir, uint32 n, uint32* v) +{ + dir->tdir_tag = tag; + dir->tdir_type = (short) type; + dir->tdir_count = n; + if (n == 1) { + dir->tdir_offset = v[0]; + return (1); + } else + return (TIFFWriteData(tif, dir, (char*) v)); +} + +/* + * Setup a directory entry of an array of RATIONAL + * or SRATIONAL and write the associated indirect values. + */ +static int +TIFFWriteRationalArray(TIFF* tif, + TIFFDataType type, ttag_t tag, TIFFDirEntry* dir, uint32 n, float* v) +{ + uint32 i; + uint32* t; + int status; + + dir->tdir_tag = tag; + dir->tdir_type = (short) type; + dir->tdir_count = n; + t = (uint32*) _TIFFmalloc(2*n * sizeof (uint32)); + for (i = 0; i < n; i++) { + float fv = v[i]; + int sign = 1; + uint32 den; + + if (fv < 0) { + if (type == TIFF_RATIONAL) { + TIFFWarning(tif->tif_name, + "\"%s\": Information lost writing value (%g) as (unsigned) RATIONAL", + _TIFFFieldWithTag(tif,tag)->field_name, v); + fv = 0; + } else + fv = -fv, sign = -1; + } + den = 1L; + if (fv > 0) { + while (fv < 1L<<(31-3) && den < 1L<<(31-3)) + fv *= 1<<3, den *= 1L<<3; + } + t[2*i+0] = sign * (fv + 0.5); + t[2*i+1] = den; + } + status = TIFFWriteData(tif, dir, (char *)t); + _TIFFfree((char*) t); + return (status); +} + +static int +TIFFWriteFloatArray(TIFF* tif, + TIFFDataType type, ttag_t tag, TIFFDirEntry* dir, uint32 n, float* v) +{ + dir->tdir_tag = tag; + dir->tdir_type = (short) type; + dir->tdir_count = n; + TIFFCvtNativeToIEEEFloat(tif, n, v); + if (n == 1) { + dir->tdir_offset = *(uint32*) &v[0]; + return (1); + } else + return (TIFFWriteData(tif, dir, (char*) v)); +} + +static int +TIFFWriteDoubleArray(TIFF* tif, + TIFFDataType type, ttag_t tag, TIFFDirEntry* dir, uint32 n, double* v) +{ + dir->tdir_tag = tag; + dir->tdir_type = (short) type; + dir->tdir_count = n; + TIFFCvtNativeToIEEEDouble(tif, n, v); + return (TIFFWriteData(tif, dir, (char*) v)); +} + +/* + * Write an array of ``type'' values for a specified tag (i.e. this is a tag + * which is allowed to have different types, e.g. SMaxSampleType). + * Internally the data values are represented as double since a double can + * hold any of the TIFF tag types (yes, this should really be an abstract + * type tany_t for portability). The data is converted into the specified + * type in a temporary buffer and then handed off to the appropriate array + * writer. + */ +static int +TIFFWriteAnyArray(TIFF* tif, + TIFFDataType type, ttag_t tag, TIFFDirEntry* dir, uint32 n, double* v) +{ + char buf[10 * sizeof(double)]; + char* w = buf; + int i, status = 0; + + if (n * TIFFDataWidth(type) > sizeof buf) + w = (char*) _TIFFmalloc(n * TIFFDataWidth(type)); + switch (type) { + case TIFF_BYTE: + { unsigned char* bp = (unsigned char*) w; + for (i = 0; i < n; i++) + bp[i] = (unsigned char) v[i]; + dir->tdir_tag = tag; + dir->tdir_type = (short) type; + dir->tdir_count = n; + if (!TIFFWriteByteArray(tif, dir, (char*) bp)) + goto out; + } + break; + case TIFF_SBYTE: + { signed char* bp = (signed char*) w; + for (i = 0; i < n; i++) + bp[i] = (signed char) v[i]; + dir->tdir_tag = tag; + dir->tdir_type = (short) type; + dir->tdir_count = n; + if (!TIFFWriteByteArray(tif, dir, (char*) bp)) + goto out; + } + break; + case TIFF_SHORT: + { uint16* bp = (uint16*) w; + for (i = 0; i < n; i++) + bp[i] = (uint16) v[i]; + if (!TIFFWriteShortArray(tif, type, tag, dir, n, (uint16*)bp)) + goto out; + } + break; + case TIFF_SSHORT: + { int16* bp = (int16*) w; + for (i = 0; i < n; i++) + bp[i] = (int16) v[i]; + if (!TIFFWriteShortArray(tif, type, tag, dir, n, (uint16*)bp)) + goto out; + } + break; + case TIFF_LONG: + { uint32* bp = (uint32*) w; + for (i = 0; i < n; i++) + bp[i] = (uint32) v[i]; + if (!TIFFWriteLongArray(tif, type, tag, dir, n, bp)) + goto out; + } + break; + case TIFF_SLONG: + { int32* bp = (int32*) w; + for (i = 0; i < n; i++) + bp[i] = (int32) v[i]; + if (!TIFFWriteLongArray(tif, type, tag, dir, n, (uint32*) bp)) + goto out; + } + break; + case TIFF_FLOAT: + { float* bp = (float*) w; + for (i = 0; i < n; i++) + bp[i] = (float) v[i]; + if (!TIFFWriteFloatArray(tif, type, tag, dir, n, bp)) + goto out; + } + break; + case TIFF_DOUBLE: + return (TIFFWriteDoubleArray(tif, type, tag, dir, n, v)); + default: + /* TIFF_NOTYPE */ + /* TIFF_ASCII */ + /* TIFF_UNDEFINED */ + /* TIFF_RATIONAL */ + /* TIFF_SRATIONAL */ + goto out; + } + status = 1; + out: + if (w != buf) + _TIFFfree(w); + return (status); +} + +#ifdef COLORIMETRY_SUPPORT +static int +TIFFWriteTransferFunction(TIFF* tif, TIFFDirEntry* dir) +{ + TIFFDirectory* td = &tif->tif_dir; + tsize_t n = (1L<<td->td_bitspersample) * sizeof (uint16); + uint16** tf = td->td_transferfunction; + int ncols; + + /* + * Check if the table can be written as a single column, + * or if it must be written as 3 columns. Note that we + * write a 3-column tag if there are 2 samples/pixel and + * a single column of data won't suffice--hmm. + */ + switch (td->td_samplesperpixel - td->td_extrasamples) { + default: if (_TIFFmemcmp(tf[0], tf[2], n)) { ncols = 3; break; } + case 2: if (_TIFFmemcmp(tf[0], tf[1], n)) { ncols = 3; break; } + case 1: case 0: ncols = 1; + } + return (TIFFWriteShortTable(tif, + TIFFTAG_TRANSFERFUNCTION, dir, ncols, tf)); +} +#endif + +/* + * Write a contiguous directory item. + */ +static int +TIFFWriteData(TIFF* tif, TIFFDirEntry* dir, char* cp) +{ + tsize_t cc; + + if (tif->tif_flags & TIFF_SWAB) { + switch (dir->tdir_type) { + case TIFF_SHORT: + case TIFF_SSHORT: + TIFFSwabArrayOfShort((uint16*) cp, dir->tdir_count); + break; + case TIFF_LONG: + case TIFF_SLONG: + case TIFF_FLOAT: + TIFFSwabArrayOfLong((uint32*) cp, dir->tdir_count); + break; + case TIFF_RATIONAL: + case TIFF_SRATIONAL: + TIFFSwabArrayOfLong((uint32*) cp, 2*dir->tdir_count); + break; + case TIFF_DOUBLE: + TIFFSwabArrayOfDouble((double*) cp, dir->tdir_count); + break; + } + } + dir->tdir_offset = tif->tif_dataoff; + cc = dir->tdir_count * TIFFDataWidth(dir->tdir_type); + if (SeekOK(tif, dir->tdir_offset) && + WriteOK(tif, cp, cc)) { + tif->tif_dataoff += (cc + 1) & ~1; + return (1); + } + TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "Error writing data for field \"%s\"", + _TIFFFieldWithTag(tif, dir->tdir_tag)->field_name); + return (0); +} + +/* + * Link the current directory into the + * directory chain for the file. + */ +static int +TIFFLinkDirectory(TIFF* tif) +{ + static const char module[] = "TIFFLinkDirectory"; + uint32 nextdir; + uint32 diroff; + + tif->tif_diroff = (TIFFSeekFile(tif, (toff_t) 0, SEEK_END)+1) &~ 1; + diroff = (uint32) tif->tif_diroff; + if (tif->tif_flags & TIFF_SWAB) + TIFFSwabLong(&diroff); +#if SUBIFD_SUPPORT + if (tif->tif_flags & TIFF_INSUBIFD) { + (void) TIFFSeekFile(tif, tif->tif_subifdoff, SEEK_SET); + if (!WriteOK(tif, &diroff, sizeof (diroff))) { + TIFFErrorExt(tif->tif_clientdata, module, + "%s: Error writing SubIFD directory link", + tif->tif_name); + return (0); + } + /* + * Advance to the next SubIFD or, if this is + * the last one configured, revert back to the + * normal directory linkage. + */ + if (--tif->tif_nsubifd) + tif->tif_subifdoff += sizeof (diroff); + else + tif->tif_flags &= ~TIFF_INSUBIFD; + return (1); + } +#endif + if (tif->tif_header.tiff_diroff == 0) { + /* + * First directory, overwrite offset in header. + */ + tif->tif_header.tiff_diroff = (uint32) tif->tif_diroff; +#define HDROFF(f) ((toff_t) &(((TIFFHeader*) 0)->f)) + (void) TIFFSeekFile(tif, HDROFF(tiff_diroff), SEEK_SET); + if (!WriteOK(tif, &diroff, sizeof (diroff))) { + TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "Error writing TIFF header"); + return (0); + } + return (1); + } + /* + * Not the first directory, search to the last and append. + */ + nextdir = tif->tif_header.tiff_diroff; + do { + uint16 dircount; + + if (!SeekOK(tif, nextdir) || + !ReadOK(tif, &dircount, sizeof (dircount))) { + TIFFErrorExt(tif->tif_clientdata, module, "Error fetching directory count"); + return (0); + } + if (tif->tif_flags & TIFF_SWAB) + TIFFSwabShort(&dircount); + (void) TIFFSeekFile(tif, + dircount * sizeof (TIFFDirEntry), SEEK_CUR); + if (!ReadOK(tif, &nextdir, sizeof (nextdir))) { + TIFFErrorExt(tif->tif_clientdata, module, "Error fetching directory link"); + return (0); + } + if (tif->tif_flags & TIFF_SWAB) + TIFFSwabLong(&nextdir); + } while (nextdir != 0); + (void) TIFFSeekFile(tif, -(toff_t) sizeof (nextdir), SEEK_CUR); + if (!WriteOK(tif, &diroff, sizeof (diroff))) { + TIFFErrorExt(tif->tif_clientdata, module, "Error writing directory link"); + return (0); + } + return (1); +} +/* + * Local Variables: + * mode: c + * c-basic-offset: 8 + * fill-column: 78 + * End: + */ |